package com.foxit.common;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Enumeration;

import org.apache.tools.zip.ZipEntry;
import org.apache.tools.zip.ZipFile;
import org.apache.tools.zip.ZipOutputStream;

public class ZipFileUtil {
	
	/**
	 * 压缩文件-由于out要在递归调用外,所以封装一个方法用来
	 * 调用ZipFiles(ZipOutputStream out,String path,File... srcFiles)
	 * @param zip
	 * @param path
	 * @param srcFiles
	 * @throws IOException
	 */
	public static void ZipFiles(File zip,String path,File... srcFiles) throws IOException{
		ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zip));
		ZipFiles(out,path,srcFiles);
		out.close();
		System.out.println("*****************压缩完毕*******************");
	}
	/**
	 * 压缩文件-File
	 * @param zipFile  zip文件
	 * @param srcFiles 被压缩源文件
	 */
	public static void ZipFiles(ZipOutputStream out,String path,File... srcFiles){
		path = path.replaceAll("\\*", "/");
		if(!path.endsWith("/")){
			path+="/";
		}
		byte[] buf = new byte[1024];
		try {
			for(int i=0;i<srcFiles.length;i++){
				if(srcFiles[i].isDirectory()){
					File[] files = srcFiles[i].listFiles();
					String srcPath = srcFiles[i].getName();
					srcPath = srcPath.replaceAll("\\*", "/");
					if(!srcPath.endsWith("/")){
						srcPath+="/";
					}
					out.putNextEntry(new ZipEntry(path+srcPath));
					ZipFiles(out,path+srcPath,files);
				}
				else{
					FileInputStream in = new FileInputStream(srcFiles[i]);
					System.out.println(path + srcFiles[i].getName());
					out.putNextEntry(new ZipEntry(path + srcFiles[i].getName()));
					int len;
					while((len=in.read(buf))>0){
						out.write(buf,0,len);
					}
					out.closeEntry();
					in.close();
				}
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
	
	/**
	 * 解压到指定目录
	 * @param zipPath
	 * @param descDir
	 */
	public static void unZipFiles(String zipPath,String descDir)throws IOException{
		unZipFiles(new File(zipPath), descDir);
	}
	/**
	 * 解压文件到指定目录
	 * @param zipFile
	 * @param descDir
	 */
	@SuppressWarnings("rawtypes")
	public static void unZipFiles(File zipFile,String descDir)throws IOException{
		File pathFile = new File(descDir);
		if(!pathFile.exists()){
			pathFile.mkdirs();
		}
		ZipFile zip = new ZipFile(zipFile);
		for(Enumeration entries = zip.getEntries();entries.hasMoreElements();){
			ZipEntry entry = (ZipEntry)entries.nextElement();
			String zipEntryName = entry.getName();
			InputStream in = zip.getInputStream(entry);
			String outPath = (descDir+zipEntryName).replaceAll("\\*", "/");;
			//判断路径是否存在,不存在则创建文件路径
			File file = new File(outPath.substring(0, outPath.lastIndexOf('/')));
			if(!file.exists()){
				file.mkdirs();
			}
			//判断文件全路径是否为文件夹,如果是上面已经上传,不需要解压
			if(new File(outPath).isDirectory()){
				continue;
			}
			//输出文件路径信息
			System.out.println(outPath);
			
			OutputStream out = new FileOutputStream(outPath);
			byte[] buf1 = new byte[1024];
			int len;
			while((len=in.read(buf1))>0){
				out.write(buf1,0,len);
			}
			in.close();
			out.close();
			}
		System.out.println("******************解压完毕********************");
	}
	
	
	public static void main(String[] args) throws IOException {
		/**
		 * 压缩文件
		 */
		File[] files = new File[]{new File("F:\\testjs")};
		File zip = new File("F:/压缩.zip");
		ZipFiles(zip,"",files);
		
		/**
		 * 解压文件
		 */
		File zipFile = new File("F:/压缩.zip");
		String path = "F:/zipfile/";
		unZipFiles(zipFile, path);
	}

}
